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PRIOn knowledge basePRION:CVE-2021-26402

HistoryJan 11, 2023 - 8:15 a.m.

Out-of-bounds

2023-01-1108:15:00

PRIOn knowledge base

www.prio-n.com

7.1 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

7.6 High

AI Score

Confidence

High

3.2 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:S/C:N/I:P/A:P

0.0004 Low

EPSS

Percentile

7.2%

JSON

Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions which may lead to a potential loss of integrity and availability.

CPENameOperatorVersion
epyc_7002_firmwareeq< romepi-1.0.0.c
epyc_7003_firmwareeq< milanpi-1.0.0.4
epyc_7232p_firmwareeq< romepi-1.0.0.c
epyc_7252_firmwareeq< romepi-1.0.0.c
epyc_7262_firmwareeq< romepi-1.0.0.c
epyc_7272_firmwareeq< romepi-1.0.0.c
epyc_7282_firmwareeq< romepi-1.0.0.c
epyc_72f3_firmwareeq< milanpi-1.0.0.4
epyc_7302_firmwareeq< romepi-1.0.0.c
epyc_7302p_firmwareeq< romepi-1.0.0.c

Name	Operator	Version
epyc_7002_firmware	eq	< romepi-1.0.0.c
epyc_7003_firmware	eq	< milanpi-1.0.0.4
epyc_7232p_firmware	eq	< romepi-1.0.0.c
epyc_7252_firmware	eq	< romepi-1.0.0.c
epyc_7262_firmware	eq	< romepi-1.0.0.c
epyc_7272_firmware	eq	< romepi-1.0.0.c
epyc_7282_firmware	eq	< romepi-1.0.0.c
epyc_72f3_firmware	eq	< milanpi-1.0.0.4
epyc_7302_firmware	eq	< romepi-1.0.0.c
epyc_7302p_firmware	eq	< romepi-1.0.0.c

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References

www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032

7.1 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

7.6 High

AI Score

Confidence

High

3.2 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:S/C:N/I:P/A:P

0.0004 Low

EPSS

Percentile

7.2%

JSON

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